Regard rambling rose as ugly feature (7)
I believe the answer is:
eyesore
'ugly feature' is the definition.
(I've seen this before)
'regard rambling rose' is the wordplay.
'regard' becomes 'eye' (I've seen this in another clue).
'rambling' indicates anagramming the letters.
'rose' is an anagram of 'sore'.
'eye'+'sore'='EYESORE'
'as' is the link.
(Other definitions for eyesore that I've seen before include "An unsightly thing" , "Ugly and offensive sight" , "Ugly item" , "Something ugly and offensive" , "Blot on the landscape" .)